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JP2011244104

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DESCRIPTION JP2011244104
An in-vehicle speaker device capable of improving the rigidity of an interior material and
efficiently transmitting the vibration of a composite speaker to the interior material is provided.
The present apparatus is an on-vehicle speaker apparatus 1 attached to an interior material
(ceiling base 20) of a vehicle, and outputs a speaker unit 12 for outputting a sound in a middle to
high range and a sound in a low range A composite speaker 14 having an actuator portion 13 for
driving the vibration member, and a vibration member 15 mounted on the actuator portion to
support the composite speaker and attached to the interior material, and the vibration member is
mounted on the interior material. In the speaker, the speaker portion is disposed on the vehicle
interior side R1, and the actuator portion is disposed on the vehicle interior side R2. [Selected
figure] Figure 1
In-vehicle speaker device
[0001]
The present invention relates to a vehicle-mounted speaker device, and more particularly to a
vehicle-mounted speaker device capable of improving the rigidity of an interior material and
efficiently transmitting the vibration of a composite speaker to the interior material.
[0002]
2. Description of the Related Art Conventionally, as an on-vehicle speaker device, one in which a
speaker is attached to a ceiling base material of a vehicle is generally known (for example, see
Patent Documents 1 and 2).
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1
In addition, as another on-vehicle speaker device, a support member for improving the rigidity of
the ceiling is attached to the surface side of the ceiling base outside the passenger compartment,
and a speaker is supported by the support member. (For example, refer to patent documents 3
and 4).
[0003]
JP-A-2005-22546 JP-A-2009-173071 JP-A-2001-513722 JP-A-2001-513723
[0004]
In recent years, a composite speaker has been developed which has a speaker unit for outputting
middle to high-pitched sound and an actuator unit for outputting low-pitched sound.
When the on-vehicle speaker is configured using this composite speaker, it is conceivable to
output the sound in the low-pitch range by using the interior material of the vehicle (for example,
a ceiling base material, a door trim, etc.) as a diaphragm. At this time, it is necessary to
appropriately increase the rigidity of the interior material and efficiently transmit the vibration of
the actuator portion of the composite speaker to the interior material. Therefore, at present, the
appearance of a vehicle-mounted speaker device that satisfies such a demand is desired.
Although Patent Documents 3 and 4 describe support members for enhancing the rigidity of the
ceiling, a technique for efficiently transmitting the vibration of the speaker to the ceiling
substrate is not disclosed at all.
[0005]
The present invention has been made in view of the above-mentioned present situation, and it is
possible to provide an on-vehicle speaker device capable of improving the rigidity of the interior
material and efficiently transmitting the vibration of the composite speaker to the interior
material. To aim.
[0006]
In order to solve the above-mentioned problems, the invention according to claim 1 is an on-
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vehicle speaker device attached to an interior material of a vehicle, which includes a speaker unit
for outputting middle-to-high range sound and a low-range sound. A composite speaker having
an actuator unit for outputting, and a vibrating member mounted on the actuator unit to support
the composite speaker and mounted on the interior material, the vibration member being
mounted on the interior material In the composite speaker, the speaker unit may be disposed on
the vehicle interior side, and the actuator unit may be disposed outside the vehicle interior.
According to a second aspect of the present invention, in the first aspect, the composite speaker
is disposed such that the actuator portion is separated from the interior material. The invention
according to claim 3 further comprises, in claim 1 or 2, a speaker grille attached to the interior
material so as to cover the inside of the vehicle compartment of the speaker unit, and the speaker
grill constitutes the actuator unit. The gist of the present invention is to have a pressing portion
for pressing the flange portion toward the vibrating member. According to a fourth aspect of the
present invention, in the first or second aspect, the speaker grill further includes a speaker grille
attached to the interior material so as to cover the interior of the vehicle interior of the speaker
unit, and the speaker grill is formed on the interior material The gist of the present invention is
to have an entry portion which enters into a space not occupied by the composite speaker among
the arranged spaces of the composite speaker. According to a fifth aspect of the present
invention, in the third or fourth aspect, the vibration member is attached to the outer surface side
of the interior of the vehicle interior, and the speaker grille is a surface of the interior material on
the vehicle interior side The gist is that the interior material is attached between the vibration
member and the speaker grille.
[0007]
According to the in-vehicle speaker device of the present invention, the composite speaker
supported by the vibration member is provided with the compound speaker and the vibration
member, and the speaker portion is disposed on the vehicle interior side in the state where the
vibration member is attached to the interior material. Since the actuator unit is disposed outside
the vehicle compartment, the mid-high range sound is output from the speaker unit of the
compound speaker into the vehicle compartment, and the vibration of the actuator unit of the
compound speaker is amplified by the vibrating member. The sound of the low frequency range
is output to the vehicle interior by the vibration of the interior material. Therefore, the rigidity of
the interior material can be improved by the vibration member, and the vibration of the actuator
portion of the composite speaker can be efficiently transmitted to the interior material. As a
result, good quality sound can be output using a composite speaker. Further, in the case where
the composite speaker is disposed such that the actuator portion is separated from the interior
material, the actuator portion can vibrate relatively freely. Then, most of the vibration of the
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actuator portion is not directly transmitted to the interior material, but is transmitted to the
vibrating member and amplified, and then transmitted to the interior material. Therefore, the
vibration of the actuator portion of the composite speaker can be more efficiently transmitted to
the interior material. Moreover, since the composite speaker can be easily detached from the
interior material without removing the interior material from the vehicle, the maintainability of
the composite speaker is excellent. Further, when the speaker grill is further provided, and the
speaker grill has a pressing portion, the pressing portion of the speaker grill presses the flange
portion constituting the actuator portion toward the vibrating member. Therefore, the vibration
of the actuator portion of the composite speaker can be more efficiently transmitted to the
vibrating member by using the speaker grille. Further, when the speaker grill is further provided,
and the speaker grill has an entry portion, the entry portion of the speaker grill enters a space
not occupied by the composite speaker in the arrangement space of the composite speaker
formed in the interior material. Therefore, it is possible to reduce the extra gap in the
arrangement space of the composite speaker and to prevent the sound wrap around. As a result,
the vibration of the actuator portion of the composite speaker can be more efficiently transmitted
to the vibrating member by using the speaker grille. Furthermore, the vibration member is
attached to the outer surface of the interior material on the outer surface side, and the speaker
grille is attached to the inner surface of the interior material on the vehicle interior side, and
between the vibration member and the speaker grill When the interior material is held between
the two, the vibration of the actuator portion of the composite speaker can be more efficiently
transmitted to the interior material.
[0008]
The invention will be further described in the following detailed description referring to the nonlimiting examples of exemplary embodiments according to the invention and with reference to
the several figures referred to, but like reference numerals in the drawings. Similar parts are
shown throughout the several figures. FIG. 1 is a longitudinal sectional view of an on-vehicle
speaker device according to a first embodiment. 1 is a perspective view of a composite speaker
and a speaker grill according to Embodiment 1. FIG. It is a schematic diagram of a vehicle
provided with the said vehicle-mounted speaker. FIG. 1 is an end view of a composite speaker
according to a first embodiment. It is an exploded perspective view of the above-mentioned
compound speaker. It is a longitudinal cross-sectional view of the said compound speaker. It is
VII arrow line view in the state which removed the diaphragm of FIG. It is a longitudinal crosssectional view of the vehicle-mounted speaker apparatus which concerns on a comparative
example. It is a graph which shows the result of the sound test of the vehicle-mounted speaker
apparatus which concerns on an Example and a comparative example. FIG. 7 is a longitudinal
sectional view of an on-vehicle speaker device according to a second embodiment. FIG. 7 is a
perspective view of a composite speaker and a speaker grill according to a second embodiment.
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FIG. 10 is a longitudinal sectional view of an on-vehicle speaker device according to a third
embodiment. FIG. 10 is a longitudinal sectional view of an on-vehicle speaker device according to
a fourth embodiment. FIG. 16 is a perspective view of a vibrating member according to a fourth
embodiment. It is a longitudinal cross-sectional view of the other form vehicle-mounted speaker
apparatus.
[0009]
The matter set forth herein is illustrative and is for the purpose of illustrating the embodiments
of the invention and is intended to provide the most effective and easily understood explanation
of the principles and conceptual features of the invention. It is stated for the purpose of
providing what seems to be. In this respect, it is not intended to show the structural details of the
present invention beyond what is necessary for a fundamental understanding of the present
invention, and some forms of the present invention will It will be apparent to those skilled in the
art how it may be embodied in practice.
[0010]
1. In-Vehicle Speaker Device Embodiment 1. An on-vehicle speaker device according to the
present invention is an on-vehicle speaker device attached to an interior material of a vehicle,
and is a composite having a speaker unit for outputting middle to high frequency sound and an
actuator for outputting low frequency sound. The composite speaker includes the speaker, the
actuator unit mounted to support the composite speaker, and the vibrating member attached to
the interior material, and the vibration member mounted on the interior material. And the
actuator unit is disposed outside the vehicle compartment (see, for example, FIG. 1 and the like).
[0011]
First Embodiment As an on-vehicle speaker device, for example, a form in which the abovementioned composite speaker is disposed so that the actuator part is separated from the interior
material (for example, see FIG. 1 etc.) can be mentioned. As this composite speaker, for example,
(1) a form in which the actuator unit is disposed in the disposition space of the composite
speaker formed in the interior material and is disposed to be separated from the interior material
(for example, see FIG. 1 etc.) (2) A form (see, for example, FIG. 12 or the like) may be mentioned
in which the actuator portion is disposed in the disposition space of the composite speaker
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formed in the vibration member and is disposed apart from the interior material.
[0012]
In the above-mentioned (1) and (2) modes, for example, the composite speaker is disposed such
that the end face of the speaker portion on the vehicle interior side is positioned outside the
interior of the vehicle compartment from the end face (design surface) of the interior material on
the vehicle interior side (See, for example, FIG. 12 and the like). Thus, the composite speaker can
be disposed without protruding from the end surface of the interior material on the vehicle
interior side to the vehicle interior side, and the designability of the interior material on the
vehicle interior side (design surface side) can be improved.
[0013]
First Embodiment As an on-vehicle speaker device, for example, a form further including a
speaker grill attached to an interior material so as to cover a side of a vehicle interior of the
speaker unit (for example, see FIG. 1 and the like) can be mentioned. As this speaker grille, for
example, (1) a form having a pressing part for pressing the flange part constituting the actuator
part toward the vibrating member, (2) a composite of the arrangement space of the composite
speaker formed in the interior material One or a combination of two or more types in a form
having an entry part entering a space not occupied by a speaker can be mentioned.
[0014]
The pressing portion and / or the entering portion may be configured, for example, by a
protruding portion which protrudes outward from the mounting surface side of the speaker grille
to the interior material. In particular, it is preferable to use both the pressing portion and the
entering portion by the projecting portion. Also, the entry portion can fill, for example, 70 to
100% (preferably 80 to 100%, particularly 90 to 100%) of the space not occupied by the
composite speaker. Furthermore, in the above (1) and (2) modes, for example, the vibration
member may be attached to the outer surface of the interior material on the outer side of the
vehicle interior, and the speaker grill may be attached to the inner surface of the interior material
on the vehicle interior side it can.
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[0015]
First Embodiment In the on-vehicle speaker device, for example, the composite speaker has a
group of magnets arranged in a line such that two adjacent magnetic poles are opposite to each
other, and one of the groups of magnets is opposed to one of the magnetic poles A magnetic flux
generated between adjacent magnets and between a magnet and a yoke on a surface of the
diaphragm arranged on the side opposite to the magnetic poles of the diaphragm arranged along
the arrangement direction of the arranged flat diaphragm and magnets. And a plurality of voice
coils formed to interlink with each other and the other of the pair of magnetic poles of the
magnet, and a pair of side edges along the arrangement direction of the magnets are bent in the
direction toward the diaphragm The yoke is provided on a frame which supports the diaphragm
at the periphery of the diaphragm and which accommodates the magnet and the yoke, an
actuator portion to which the frame is fixed, an actuator portion, and the yoke. Comprising a
sexual member, the speaker unit, the group of magnets include constructed form a diaphragm
and a voice coil (e.g., see FIG. 4).
[0016]
According to the above composite speaker, the magnet is attached to the actuator unit through
the yoke and the elastic member, and therefore, the diaphragm and the diaphragm are interacted
with the fluctuating magnetic field generated in the voice coil by inputting the electric signal. The
magnet vibrates, which converts the electrical signal into sound. Here, among the vibrations
generated by the magnet, those of high frequency are absorbed by the elastic member, while
those of low frequency are transmitted to the actuator unit through the elastic member. Further,
even in the vibration generated in the diaphragm, low frequency ones are transmitted to the
actuator unit through the frame. As a result, the sound in the middle to high range is output
forward from the diaphragm constituting the speaker unit, and the sound in the low range is
output via the actuator unit.
[0017]
The elastic member is selected from, for example, an elastic material molded body obtained by
molding an elastic material selected from a thermoplastic elastomer, a vulcanized rubber, and a
soft resin, an elastic material foam obtained by foaming an elastic material, and a plate spring. be
able to. As a result, among the vibrations generated in the magnet, the high frequency one is
particularly effectively absorbed by the elastic member, and the low frequency one is efficiently
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transmitted to the actuator part by the elastic member.
[0018]
Each of the diaphragm and the frame may be made of, for example, an aluminum alloy. Thereby,
the heat generated by inputting the sound signal to the voice coil is transmitted from the voice
coil to the diaphragm and from the diaphragm to the frame and dissipated.
[0019]
Examples of the voice coil include (1) a form formed for each magnet, and (2) a form formed for
every two magnets. According to the above (1) mode, the sound quality in the high range is
excellent. Moreover, according to the above-mentioned (2) form, it can be made simple and
cheap.
[0020]
First Embodiment In the on-vehicle speaker device, for example, the actuator unit has a flat plate
portion arranged in parallel to face a flat diaphragm which constitutes the speaker portion, and
one surface of the actuator portion vibrates. It can be attached to the diaphragm so as to contact
the flat portion of the member. Thereby, the vibration of the actuator part of the composite
speaker can be more efficiently transmitted to the vibrating member.
[0021]
Hereinafter, the present invention will be specifically described with reference to Examples 1 to 4
using the drawings. In the first to fourth embodiments, as the “vehicle-mounted speaker
device” according to the present invention, as shown in FIG. 3, a ceiling substrate 20 (opposed
to the vehicle interior side of the roof panel 9 of the vehicle) It illustrates as "the interior
material" concerning the present invention. For example, mounted on the vehicle).
[0022]
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8
First Embodiment (1) Configuration of In-Vehicle Speaker Device As shown in FIGS. 1 and 2, the
in-vehicle speaker device 11 according to the present embodiment includes a speaker unit 12 for
outputting middle-to-high range sound and A composite speaker 14 having an actuator portion
13 for outputting sound in the low frequency range, and a flat plate attached with the actuator
portion 13 to support the composite speaker 14 and attached to the surface side of the vehicle
interior outside R2 of the ceiling substrate 20 And the speaker grille 16 attached to the surface
side of the vehicle interior side R1 of the ceiling base material 20 so as to cover the front side
(vehicle interior side R1) of the speaker unit 12.
[0023]
The actuator unit 13 is formed in a flat plate shape so as to be opposed to and parallel to the flat
plate-shaped diaphragm 1 which constitutes the speaker unit 12.
The actuator portion 13 is attached to the vibrating member 15 with one surface thereof in
contact with the flat portion of the vibrating member 15. Further, the speaker grill 16 is formed
with a plurality of through holes 17 for emitting sound.
[0024]
In a state where the vibration member 15 is attached to the ceiling base 20, the compound
speaker 14 is disposed such that the speaker unit 12 faces the vehicle interior side R1 and the
actuator unit 13 faces the vehicle interior outside R2 The through holes 19 (the “arrangement
space of the composite speaker” according to the present invention) are exemplified in which
the portion 13 is formed in the ceiling base 20. ) And spaced apart from the ceiling substrate 20.
[0025]
The attachment form of the composite speaker 14 to the vibration member 15 in this
embodiment, the attachment form of the vibration member 15 to the ceiling base 20, and the
attachment form of the speaker grille 16 to the ceiling base 29 are, for example, elastic hooks.
And combinations of one or more of locking, screwing, screwing, bonding and the like. Further, in
the present embodiment, a resin sheet, a resin foam, or a fiber material, and a composite thereof
are used as the ceiling base material 20, and the skin material 18 is laminated on the surface side
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on the vehicle interior side. Shall be adopted.
[0026]
As shown in FIGS. 4 to 7, the composite speaker 14 has a sheet-like diaphragm 1 having a
rectangular planar shape whose long sides are along the arrangement direction of the magnets 2
described later, and the magnetic poles 2S and 2N are diaphragms. The two magnets 2S, 2N
adjacent to one side of 1 are arranged along the arrangement direction of the group of magnets
2 arranged in a row and the magnets 2 so that two adjacent magnetic poles 2S, 2N are opposite
to each other. Also, it faces the magnetic pole 2S of the diaphragm 1 so that the magnetic pole 2S
of the south pole faces the magnet 2 facing the diaphragm 1, in other words, so as to face every
other magnet 2 Voice coil 3 provided on the side surface, yoke 4 disposed to abut magnetic pole
2N (2S) on the side of magnet 2 not opposed to diaphragm 1, and peripheral portion of
diaphragm 1 While supporting the diaphragm 1, the magnet 2 and the yoke 4 Having a frame 5
which volumes of the plate-shaped actuator unit 13 that frame 5 is fixed. An elastic member 7 is
interposed between the yoke 4 and the actuator portion 13. In the present embodiment, the
speaker unit 12 is composed of the magnet 2, the diaphragm 1, the voice coil 3 and the like.
[0027]
Of the magnets 2 described above, the iron plate 8 is inserted between the magnet 2 and the
yoke 4 to increase the volume of the magnets 2 S facing the diaphragm 1, in other words, those
facing the voice coil 3. ing.
[0028]
The yoke 4 is formed of a ferromagnetic material, and has a wedge shape in which both side
edges 4A are bent toward the diaphragm 1 and the magnet 2 is accommodated.
Further, the non-woven fabric 10 is provided between the yoke 4 and the magnet 2 and the voice
coil 3 so that the magnetic pole 2S (2N) of the magnet 2 does not directly hit the voice coil 3
when the magnet 2 and the diaphragm 1 vibrate. It is inserted.
[0029]
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(2) Operation of on-vehicle speaker device Next, the operation of the on-vehicle speaker device
11 configured as described above will be described. According to the composite speaker 14
described above, when an electric signal is input to the voice coil 3, a fluctuating magnetic field is
generated in the voice coil 3, and the fluctuating magnetic field interacts with the magnetic field
of the magnet 2 to vibrate the diaphragm 1. Here, since the magnet 2 is also not directly fixed to
the actuator portion 13 but attached via the elastic member 7, the diaphragm 1 vibrates and the
magnet 2 also vibrates at the same time. This converts the electrical signal into sound.
[0030]
Among the sounds generated by the diaphragm 1, the sound in the middle to high range is
directly propagated forward, in other words, to the upper side in FIG. 4 (inside R1) as shown by
arrow A in FIG. Then, the sound of the middle to high range is output from the speaker unit 12 of
the composite speaker 14 into the vehicle compartment. On the other hand, among the sounds
generated by the diaphragm 1, the sound in the low range is transmitted to the actuator unit 13
through the frame 5 as shown by the arrow B in FIG. Further, among the vibrations of the
magnet 2, high frequency ones are absorbed by the elastic member 7 and are not transmitted to
the actuator section 13, but low frequency ones are backward as shown by the arrow C in FIG. It
is transmitted to the actuator unit 13 via the elastic member 7 toward the lower side (vehicle
compartment outer side R2) in the figure, and the actuator unit 13 vibrates. The vibration of the
actuator portion 13 is transmitted to the ceiling base 20 while being amplified by the vibrating
member 15, and the sound of the bass region is output to the vehicle interior by the vibration of
the ceiling base 20.
[0031]
(3) Effects of the First Embodiment As described above, according to the in-vehicle speaker
device 11 of the first embodiment, the composite speaker 14 and the vibrating member 15 are
provided and configured, and the vibrating member 15 is attached to the ceiling base 20 Then,
the compound speaker 14 supported by the vibrating member 15 is disposed so that the speaker
unit 12 faces the vehicle interior side R1 and the actuator unit 13 faces the vehicle interior outer
side R2. The sound of the high-pitched range is output into the vehicle compartment, and the
vibration of the actuator portion 13 of the composite speaker 14 is amplified by the vibrating
member 15 and transmitted to the ceiling base 20, and the vibration of the ceiling base 20 A
sound is output into the passenger compartment. Therefore, the rigidity of the ceiling base 20
can be improved by the vibrating member 15, and the vibration of the actuator portion 13 of the
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composite speaker 14 can be efficiently transmitted to the ceiling base 20. As a result, a good
quality sound can be output using the composite speaker 14. Further, since one compound
speaker 14 can faithfully reproduce high and low tones, it is not necessary to separately provide
a speaker for bass reproduction such as a woofer. Moreover, since the diaphragm 1 is flat and
not cone-shaped, it can be made much thinner than a cone-type speaker.
[0032]
Further, in the first embodiment, since the composite speaker 14 is disposed such that the
actuator portion 13 is separated from the ceiling base 20, the actuator portion 13 can vibrate
relatively freely. Then, most of the vibration of the actuator unit 13 is not directly transmitted to
the ceiling substrate 20, but is transmitted to the vibrating member 15 and amplified, and then
transmitted to the ceiling substrate 20. Therefore, the vibration of the actuator portion 13 of the
composite speaker 14 can be transmitted to the ceiling base 20 more efficiently. Further, as
shown by phantom lines in FIG. 1, the composite speaker 14 can be easily detached from the
ceiling substrate 20 without removing the ceiling substrate 20 from the vehicle, so the
maintainability of the composite speaker 14 is excellent.
[0033]
Further, in the first embodiment, the end of the vibrating member 15 is attached to the outer
surface of the ceiling base 20 on the outer surface of the vehicle, and the end of the speaker grill
22 is on the outer surface of the ceiling base 20 on the inner surface. Since the ceiling base 20 is
held between the vibrating member 15 and the speaker grille 22 when attached, the vibration of
the actuator portion 13 of the composite speaker 14 can be transmitted to the ceiling base 20
more efficiently.
[0034]
Further, in the first embodiment, the actuator portion 13 is formed in a flat plate shape so as to
be arranged in parallel to face the flat plate-shaped diaphragm 1 constituting the speaker portion
12 and one surface of the actuator portion 13 Is attached to the vibrating member 15 so as to
contact the flat surface portion of the vibrating member 15, vibration of the actuator portion 13
of the composite speaker 14 can be transmitted to the vibrating member 15 more efficiently.
[0035]
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(4) Sound Test Results of Example 1 Here, the sound test results of the in-vehicle speaker device
11 of the first embodiment and the in-vehicle speaker device 111 of the comparative example
are compared.
In addition, the speaker test method of JISC5532 was employ | adopted as said sound test.
In addition, as the on-vehicle speaker device 111 according to the comparative example, as
shown in FIG. 8, the actuator portion 13 of the composite speaker 14 is not used without using
the vibrating member 15 that constitutes the on-vehicle speaker device 11 of the first
embodiment. What was attached to the surface side of the vehicle interior side of ceiling base
material 20 directly was adopted.
[0036]
As shown in FIG. 9, in the in-vehicle speaker device 11 of the first example, a high sound
pressure was exhibited with the sound in the low frequency range (sound with a frequency of 25
to 150 Hz) as compared with the in-vehicle speaker device 111 of the comparative example.
Therefore, the vibration amplification effect by the vibrating member 15 was confirmed.
[0037]
Second Embodiment Next, the configuration of a vehicle-mounted speaker device according to a
second embodiment will be described. In the on-vehicle speaker device of the second
embodiment, the same reference numerals are given to substantially the same components as the
on-vehicle speaker device 11 according to the first embodiment, and the detailed description is
omitted. I will explain in detail.
[0038]
(1) Configuration of In-Vehicle Speaker Device As shown in FIGS. 10 and 11, the in-vehicle
speaker device 21 according to the present embodiment includes the composite speaker 14, the
vibrating member 15, and the front side of the speaker portion 12 And a speaker grille 22
mounted on the surface side of the vehicle interior side R1 of the ceiling base 20 so as to cover
the inside R1).
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[0039]
The speaker grille 22 is exemplified as a plurality of (two in the drawing) projecting portions 23
(in the figure, protruding portions) ("pressing portion" and "entering portion" according to the
present invention) protruding outward from the mounting surface side with respect to the ceiling
substrate 20.
) Is provided. Then, in a state where the speaker grille 22 and the vibrating member 15 are
attached to the ceiling base 20, the projecting portion 23 of the speaker grille 22 presses the
flange portion 13a of the actuator portion 13 toward the vibrating member 15, and the ceiling
base It enters into a space not occupied by the composite speaker 14 among the 20 through
holes 19 and fills most of the space. Further, the speaker grille 22 is formed with a plurality of
through holes 24 for emitting sound.
[0040]
(2) Operation and Effect of In-Vehicle Speaker Device According to the in-vehicle speaker device
21 having the above-described configuration, in addition to achieving substantially the same
operation and effect as the in-vehicle speaker device 11 according to the first embodiment, the
speaker grill 22 The pressing function of pressing the flange portion 13a constituting the
actuator portion 13 toward the vibrating member 15 by the projecting portion 23 of the second
embodiment makes the vibration of the actuator portion 13 of the composite speaker 14 more
efficient for the vibrating member 15 Can be transmitted. In addition, since the space 23 is filled
with the space not occupied by the composite speaker 14 in the through hole 19 of the ceiling
base 20 by the projecting portion 23 of the speaker grille 22, an extra space is formed in the
through hole 19 It can be reduced to prevent sound wrap around. As a result, the vibration of the
actuator unit 13 of the composite speaker 14 can be more efficiently transmitted to the vibrating
member 15.
[0041]
(3) Results of Sound Test of Example 2 Here, the sound test results of the in-vehicle speaker
device 21 of the second embodiment and the in-vehicle speaker device 111 of the comparative
example are compared. As shown in FIG. 9, in the in-vehicle speaker device 21 according to the
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second embodiment, the sound in the bass region (sound with a frequency of 25 to 150 Hz)
shows higher sound pressure than the in-vehicle speaker device 111 of the comparative example.
The sound in the range (sound with a frequency of 3000 to 7000 Hz) showed high sound
pressure. Therefore, while the vibration amplification effect by the vibration member 15 was
confirmed, the vibration amplification effect and the wraparound prevention effect of the sound
by the protrusion part 23 of the speaker grille 22 were confirmed.
[0042]
Third Embodiment Next, the configuration of the on-vehicle speaker device according to the third
embodiment will be described. In the vehicle-mounted speaker device of the third embodiment,
substantially the same components as those of the vehicle-mounted speaker device 11 according
to the first embodiment are denoted by the same reference numerals, and detailed description
thereof is omitted. Explain the speaker grille in detail.
[0043]
(1) Configuration of In-Vehicle Speaker Device As shown in FIG. 12, the in-vehicle loudspeaker
device 31 according to the present embodiment is provided with a composite speaker 14 and an
actuator section 13 to support the composite speaker 14 and supports a ceiling substrate. It is
attached to the surface side of the vehicle interior side R1 of the ceiling base material 20 so as to
cover the resin vibrating member 32 attached to the surface side of the vehicle interior side R2
of 20 and the front side (vehicle interior side R1) of the speaker section 12 And the speaker grille
33.
[0044]
A storage recess 34 (arrangement space of the composite speaker) for storing the composite
speaker 14 is formed on the mounting surface side of the vibrating member 32 to the ceiling
base 20.
The actuator portion 13 is attached to the vibration member 32 such that one surface of the
actuator portion 13 is in contact with the bottom surface of the housing recess 34. Then, in a
state in which the vibration member 32 is attached to the ceiling base 20, the composite speaker
14 is arranged such that the actuator unit 13 is disposed in the storage recess 34 of the vibration
member 32 and is separated from the ceiling base 20. The composite speaker 14 is disposed
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such that the end surface 12 a of the vehicle interior side R 1 of the speaker unit 12 is positioned
on the vehicle interior side R 2 with respect to the end surface 20 a (design surface) of the ceiling
substrate 20.
[0045]
The speaker grille 33 is exemplified as a plurality of (two in the drawing) protrusions 35 (in the
figure, projecting as “pressing portion” and “entering portion” according to the present
invention, which project outward from the mounting surface side with respect to the ceiling
substrate 20. ) Is provided. Then, in a state where the speaker grille 33 and the vibration member
32 are attached to the ceiling base material 20, the projecting portion 35 of the speaker grille 33
presses the flange portion 13a of the actuator unit 13 toward the vibration member 32, and the
ceiling base material The space enters into a space not occupied by the composite speaker 14 of
the 20 through holes 19 and the storage recess 34 of the vibrating member 32 and fills most of
the space. Further, the speaker grille 33 is formed with a plurality of through holes 36 for
emitting sound.
[0046]
(2) Operation and Effect of In-Vehicle Speaker Device According to the in-vehicle speaker device
31 having the above configuration, the speaker grill 33 is provided in addition to achieving
substantially the same operation and effect as the in-vehicle speaker device 11 according to the
first embodiment. The pressing portion for pressing the flange portion 13a of the actuator
portion 13 toward the vibrating member 32 is exerted by the projecting portion 35 of the second
embodiment, so that the vibration of the actuator portion 13 of the composite speaker 14 can be
more efficiently applied to the vibrating member 32. Can be transmitted. In addition, since the
projecting portion 35 of the speaker grille 33 exerts a space filling function to fill a space not
occupied by the composite speaker 14 in the through hole 19 of the ceiling base 20 and the
accommodation recess 34 of the vibrating member 32. Excess clearances can be reduced by the
through holes 19 and the storage recesses 34 to prevent sound wrap around. As a result, the
vibration of the actuator portion 13 of the composite speaker 14 can be transmitted to the
vibrating member 32 more efficiently.
[0047]
Further, in the third embodiment, since the composite speaker 14 is disposed so as not to project
from the end face 20a of the interior base R1 of the ceiling base 20 to the interior R1, the room
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of the ceiling base 20 of the speaker grill 33 is The thickness of the portion projecting to the
inner side R1 can be made relatively small, and the designability of the interior side (the design
surface side) of the ceiling base 20 can be improved.
[0048]
Fourth Embodiment Next, the configuration of a vehicle-mounted speaker device according to a
fourth embodiment will be described.
In the in-vehicle speaker device of the fourth embodiment, substantially the same components as
those of the in-vehicle speaker device 11 according to the first embodiment are denoted by the
same reference numerals, and detailed description thereof is omitted. Explain the speaker grille
in detail.
[0049]
(1) Configuration of In-Vehicle Speaker Device As shown in FIGS. 13 and 14, the in-vehicle
speaker device 41 according to the present embodiment is provided with the composite speaker
14 and the actuator unit 13 to support the composite speaker 14 and The surface of the vehicle
interior side R1 of the ceiling substrate 20 is covered so as to cover the resin vibrating member
42 attached to the surface side of the vehicle interior outside R2 of the ceiling substrate 20 and
the front side (vehicle interior R1) of the speaker unit 12 And a speaker grille 43 attached to the
side.
[0050]
The vibrating member 42 has a flat plate portion 42a to which the actuator portion 13 is
attached so that one surface of the actuator portion 13 is in contact, rising portions 42b rising
from both side edges of the flat portion 42a, and side portions from each rising portion 42b. And
a flange portion 42c extending in
A storage space 44 (arrangement space of the composite speaker) for storing the composite
speaker 14 is formed by the flat plate portion 42a and the rising portions 42b of the vibrating
member 42. Then, in a state where the vibration member 42 is attached to the ceiling base 20,
the composite speaker 14 is arranged such that the actuator portion 13 is disposed in the
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storage space 44 of the vibration member 42 and is separated from the ceiling base. The
composite speaker 14 is disposed such that the end surface 12 a of the vehicle interior side R 1
of the speaker unit 12 is positioned on the vehicle interior side R 2 with respect to the end
surface 20 a (design surface) of the ceiling substrate 20.
[0051]
The speaker grille 43 is exemplified as a plurality of (two in the drawing) protrusions 45 (in the
figure, projecting as "pressing portion" and "entering portion" according to the present invention)
protruding outward from the mounting surface side with respect to the ceiling substrate 20. ) Is
provided. Then, in a state where the speaker grille 43 and the vibration member 42 are attached
to the ceiling base material 20, the projecting portion 45 of the speaker grille 43 presses the
flange portion 13a of the actuator unit 13 toward the vibration member 42, and It enters into a
space not occupied by the composite speaker 14 in the 20 through holes 19 and the storage
space 44 of the vibrating member 42 and fills most of the space. Further, the speaker grille 43 is
formed with a plurality of through holes 46 for emitting sound.
[0052]
(2) Operation and Effect of In-Vehicle Speaker Device According to the in-vehicle speaker device
41 configured as described above, the speaker grill 43 is provided in addition to achieving
substantially the same operation and effect as the in-vehicle speaker device 11 according to the
first embodiment. The pressing portion for pressing the flange portion 13a constituting the
actuator portion 13 toward the vibrating member 42 is exerted by the projecting portion 45 of
the second embodiment, so that the vibration of the actuator portion 13 of the composite
speaker 14 can be more efficiently applied to the vibrating member 42. Can be transmitted. In
addition, since the projection 45 of the speaker grille 43 serves to fill the space not occupied by
the composite speaker 14 in the through hole 19 of the ceiling base 20 and the storage space 44
of the vibration member 42, the space filling function is performed. Excess gaps can be reduced
in the through holes 19 and the storage space 44 to prevent sound from flowing around. As a
result, the vibration of the actuator portion 13 of the composite speaker 14 can be transmitted to
the vibrating member 42 more efficiently.
[0053]
Further, in the fourth embodiment, since the composite speaker 14 is disposed so as not to
project from the end face 20a of the interior base R1 of the ceiling base 20 to the interior R1, the
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room of the ceiling base 20 of the speaker grill 43 is The thickness of the portion projecting to
the inner side R1 can be made relatively small, and the designability of the interior side (the
design surface side) of the ceiling base 20 can be improved.
[0054]
In addition, in this invention, it is not restricted to the said Examples 1-4, According to the
objective and application, it can be set as the Example changed variously within the scope of the
present invention.
That is, in the above-described first to fourth embodiments, the on-vehicle speaker devices 11,
21, 31, 41 having the composite speaker 14 disposed so as not to be in direct contact with the
ceiling base 20 by separating the actuator unit 13 from the ceiling substrate 20 are illustrated.
However, the present invention is not limited to this, and for example, as shown in FIG. 15, the
actuator unit 13 is disposed so as to be held between the ceiling base 20 and the vibrating
member 15 and in direct contact with the ceiling base 20 The on-vehicle speaker device 11 ′
may be provided with the composite speaker 14.
[0055]
Furthermore, although the vehicle-mounted speaker devices 11, 21, 31, and 41 attached to the
ceiling base material 20 are illustrated in the first to fourth embodiments, the present invention
is not limited thereto. For example, door trim, floor trim, instrument panel, It may be a speaker
system mounted on a console box, a pillar, a sun visor or the like.
[0056]
Furthermore, although the vibration member 15 made of resin was illustrated in the said
Examples 1-4, it is not limited to this, For example, a metallic member and a nonmetallic member
may be sufficient.
[0057]
The foregoing examples are for illustrative purposes only and are not to be construed as
limitations on the present invention.
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While the present invention has been described by way of exemplary embodiments, it is
understood that the words used in the description and illustration of the present invention are
illustrative and exemplary rather than restrictive.
Changes may be made within the scope of the appended claims without departing from the scope
or spirit of the invention in its form, as detailed herein. While the specification herein has been
directed to specific structures, materials, and examples, the present invention is not intended to
be limited to the particulars disclosed herein, but rather is as follows: It shall cover all
functionally equivalent structures, methods, and uses within the scope.
[0058]
The invention is not limited to the embodiments detailed above, but various modifications or
alterations are possible within the scope of the claims of the invention.
[0059]
It is widely used as a technology relating to an on-vehicle speaker device attached to interior
materials of vehicles such as trains, trains, railways such as trains, construction vehicles,
agricultural vehicles, and industrial vehicles, as well as passenger cars, buses, and trucks.
[0060]
11, 11 ', 21, 31, 41; in-vehicle speaker device, 12; speaker unit, 13; actuator unit, 14; composite
speaker, 15, 32, 42; vibrating member, 16, 22, 33, 43; , 19; through holes, 20; ceiling substrates,
23, 35, 45;
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